Am I asking for trouble?

While I am normally so strict on putting keihins on 4stroke Hondas, I found something funny and wanted to give it a try.
If it works it would be period correct and being a downdraft like this, it would look cool, especially if I could find or make an alloy funnel. But on the other hand, something italian, known to give trouble.... maybe I should think of a keihin back up plan.